Helping a friend install the fly leds. He bought the works kit which includes landing lights, strobes, and nav lights. We are having trouble getting the 3 landing lights in the wind tips. Are the landing lights installed on the board before or after attaching to the wingtips? The landing lights are not the flat leds, but look more like the bulb type that have long heats sinks in the back. There are 3 lights in the set.